Baryogenesis via particle-antiparticle oscillations

Ipek, Seyda; March-Russell, John

doi:10.1103/PhysRevD.93.123528

Title: Baryogenesis via particle-antiparticle oscillations

Journal Article · Wed Jun 29 00:00:00 EDT 2016 · Physical Review D

DOI:https://doi.org/10.1103/PhysRevD.93.123528· OSTI ID:1260387

Ipek, Seyda ^[1]; March-Russell, John ^[2]

Fermi National Accelerator Lab. (FNAL), Batavia, IL (United States)
Univ. of Oxford, Oxford (England)

CP violation, which is crucial for producing the baryon asymmetry of the Universe, is enhanced in particle-antiparticle oscillations. We study particle-antiparticle oscillations [of a particle with mass O(100GeV)] with CP violation in the early Universe in the presence of interactions with O(ab-fb) cross sections. We show that if baryon-number-violating interactions exist, a baryon asymmetry can be produced via out-of-equilibrium decays of oscillating particles. As a concrete example we study a U(1)R-symmetric, R-parity-violating supersymmetry model with pseudo-Dirac gauginos, which undergo particle-antiparticle oscillations. Hence, taking bino to be the lightest U(1)_R-symmetric particle, and assuming it decays via baryon-number-violating interactions, we show that bino-antibino oscillations can produce the baryon asymmetry of the Universe.

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Research Organization:: Fermi National Accelerator Lab. (FNAL), Batavia, IL (United States)

Sponsoring Organization:: USDOE Office of Science (SC), High Energy Physics (HEP)

Grant/Contract Number:: AC02-07CH11359; SC0011637

OSTI ID:: 1260387

Alternate ID(s):: OSTI ID: 1259906

Report Number(s):: FERMILAB-PUB-16-092-T; arXiv:1604.00009; PRVDAQ; 1439777

Journal Information:: Physical Review D, Vol. 93, Issue 12; ISSN 2470-0010

Publisher:: American Physical Society (APS)Copyright Statement

Country of Publication:: United States

Language:: English

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Cited by: 15 works

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Analysis of Long Lived Particle Decays with the MATHUSLA Detector Curtin, David; Peskin, Michael E. arXiv https://doi.org/10.48550/arxiv.1705.06327	text	January 2017
Long-Lived Particles at the Energy Frontier: The MATHUSLA Physics Case Curtin, David; Drewes, Marco; McCullough, Matthew arXiv https://doi.org/10.48550/arxiv.1806.07396	text	January 2018

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